I think my girlfriend has a being cold issue, How could I help?

I recently got my own place and my girlfriend pretty much forces her way in, lol. Whenever we sleep sometimes I'll wake up to her like shaking sometimes violently which is terrifying. 😅 I don't know if it's like my place because I've turned on the heat and everything. I know there's two things that have helped, holding her or literally helping her get to the bathroom and just sit in the bath still feel horrible though, she can barely do anything when she's in that state. I have noticed that she has these like fluffy blankets at home I'm wondering if I should get a couple of those? She refuses to put on some clothing when sleeping and I don't want her to keep waking herself in the middle of the night shaking.
I think my girlfriend has a being cold issue, How could I help?
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